CVE-2026-46637
low
CVSS v3
—
CVSS v4 NEW
—
VIR risk
2.5
Description
Twig: HTML-output filters in twig/* extras incorrectly declared `is_safe => ['all']`
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Mixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 3.27.0-0+deb13u1 |
| sid | Fixed | 3.26.0-1 |
| forky | Fixed | 3.26.0-1 |
| bullseye | Affected | — |
| bookworm | Fixed | 3.5.1-1+deb12u3 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | twig/cssinliner-extra | >=2.12.0,<3.0.0|>=3.0.0,<3.26.0 | |
| Packagist | twig/markdown-extra | >=2.12.0,<3.0.0|>=3.0.0,<3.26.0 | |
| Packagist | twig/markdown-extra | <3.26.0 | 3.26.0 |
| Packagist | twig/cssinliner-extra | <3.26.0 | 3.26.0 |
| COMPOSER | twig/cssinliner-extra | < 3.26.0 | 3.26.0 |
| COMPOSER | twig/markdown-extra | < 3.26.0 | 3.26.0 |
References
- https://symfony.com/cve-2026-46637
- https://security-tracker.debian.org/tracker/CVE-2026-46637
- https://github.com/twigphp/Twig/security/advisories/GHSA-jv8m-2544-3pg3
- https://github.com/FriendsOfPHP/security-advisories/blob/master/twig/cssinliner-extra/CVE-2026-46637.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/twig/markdown-extra/CVE-2026-46637.yaml
- https://github.com/twigphp/Twig
- https://github.com/advisories/GHSA-jv8m-2544-3pg3
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.